Physics Professor Harlan Spence helps lead a NASA project that has sent two unmanned probes to explore Earth’s volatile radiation belts. The work builds on his long-running investigation of space weather. “We’re a space-faring nation and world,” says Spence, who directs UNH’s Institute for the Study of Earth, Oceans, and Space. “So much of the world economy depends on space technologies that can be affected by space weather.”